Fuel management report – pages 12-40 [PDF File

Transcription

Case study – Strategic bushfire management in the Barwon Otway landscape
The Otways Pilot Project has developed a bushfire risk profile to help inform strategic bushfire management
planning in the Barwon Otway bushfire landscape.
The residual risk profile for the Barwon Otway landscape indicates the effectiveness of bushfire fuel management
actions (see Figure 8).
In general, the analysis suggests that bushfire management in the landscape is achieving very good results in
reducing bushfire risk. From the relatively high level of residual risk (near 80 per cent) observed in 2007 before this
approach was first applied, the residual risk has steadily fallen to its current level of around 60 per cent, which is the
lowest calculated value of residual risk for the landscape in more than 20 years.
DEPI’s fire behaviour modelling shows that the planned burns outlined in the Fire Operations Plans for 2013–14
to 2015–16 will reduce the residual risk further to around 50 per cent.
The results provide strong support for the effectiveness of risk-based strategic bushfire management planning.
The risk-based approach is now being applied to strategic bushfire management planning in the rest of the state
and will be reported on in subsequent Fuel Management Reports.
The Barwon Otway Strategic Bushfire Planning Team has also used tolerable fire intervals as part of their risk-based
strategic bushfire management planning. An initial 40 year fuel management strategy was developed which sought
to minimise the area burnt below minimum tolerable fire interval in certain areas of the bushfire landscape.
Figure 8: Residual risk profile for the Barwon Otway landscape for historical records of fire since 1980 (red line) and forecast FOP
burns for 2013–2015 (blue and purple lines). The blue line represents projected risk under more favourable (drier) burning conditions,
while the purple line represents projected risk under less favourable (wetter) burning conditions. Also shown for each year is the area
burnt by bushfire, grass fire, planned burning and timber harvesting operations (bar charts).
12 Reducing Victoria’s Bushfire Risk on Public Land Fuel Management Report 2012–13
Monitoring ecosystem resilience –
progress towards Code of Practice for
Bushfire Management on Public Land
objective 2
To protect biodiversity, DEPI is adopting a risk-based
approach which will:
DEPI is developing an improved Monitoring Evaluation
and Reporting Framework for bushfire management on
public land.
• assess fire regime options against the two primary
objectives under the Code and then create strategies
for managing species and ecological communities
This framework is bringing together many of the concepts
being investigated through the monitoring and research
programs for ecosystem resilience. It will also help
DEPI meet its obligations under the Code and address
Recommendations 57 and 58 of the Victorian Bushfires
Royal Commission.
• implement these strategies
DEPI is developing tools for defining metrics of ecosystem
resilience to guide fire planning and the prioritisation and
implementation of monitoring and research.
Understanding ecological outcomes
Predicting the response of flora and fauna to fire regimes is
a key part of DEPI’s fuel management program. A fire regime
collectively includes fire frequency, intensity, season and
spatial distribution across the landscape.
Species’ responses can vary significantly to different fire
regimes and can occur over long periods. Many of Victoria’s
flora and fauna are adapted to, or even dependent on, fire
while others may face difficulties.
• predict the response of species and vegetation
communities to different fire regimes (including
planned burning)
• monitor strategy implementation, the performance of
models and metrics and ecological outcomes over the
long-term.
The development of robust ecological models and metrics
of ecosystem resilience is integral to this process. DEPI’s
research and monitoring program is developing and testing
the following three measures of ecosystem resilience, which
can potentially be used to understand the impact of planned
burning on biodiversity.
Tolerable fire interval (TFI) – This represents the minimum
or maximum recommended time intervals between
successive fire events for a particular vegetation type. The
time interval is derived from the critical features of plant
species’ life history characteristics such as growth patterns,
reproduction method and life history transition stages and
critical fauna habitat elements of the vegetation community.
Photo taken a few months after a low intensity planned burn was conducted in the River Red Gum forests in Barmah National Park.
The burn successfully reduced the dominant mass of Rush-Sedge in the understorey and led to a greater diversity of wetland species.
Reducing Victoria’s Bushfire Risk on Public Land Fuel Management Report 2012–13 13
Geometric mean abundance of species in a community
This is defined as the relative abundance of all known
species in an ecological community, and provides a robust
index of biodiversity associated with community viability.
Vegetation growth stage structure – Vegetation
communities develop through defined growth stages that
have distinguishing structural features. Different species
show different preferences for these growth stages.
Growth stage analysis assumes that maintaining a diversity
of vegetation growth stages and habitats across the
landscape, and therefore a diversity of species, is positively
correlated with ecosystem resilience. A desired growth
stage structure for a vegetation type across a landscape
can be derived based on analyses that maximise the
relative abundances of all species in that vegetation type.
The desired structure will vary depending on the number of
species that prefer particular growth stages and the relative
abundances of those species in the different growth stages.
Case study – Raymond Island
A pilot program of mechanical fuel reduction on
Raymond Island has shown the benefits of using
a case-by-case approach to fuel management.
Raymond Island, a small island located in the
Gippsland Lakes in eastern Victoria, is home
to around 500 people and hundreds of koalas.
Koalas were introduced to the island in 1953, and
Raymond Island has since become renowned for
its abundant koala population.
Typical of the East Gippsland landscape, Raymond
Island is covered in beautiful but highly flammable
native vegetation. This vegetation poses a
significant bushfire risk to human life and wildlife.
TFI is currently the best documented and researched
measure and is being implemented as a partial indicator
of resilience. TFI is a poor measure on its own because it is
unable to account for fauna distribution and abundance and
does not incorporate fire severity, patchiness and frequency
data. It provides little insight into the composition and
functioning of an ecosystem and TFI should be regarded
as a proxy measure (Keeney and Gregory 2005). DEPI is
exploring the application of TFI in conjunction with other
metrics (such as geometric mean abundance of species in
a community and vegetation growth stage structure) in order
to create a better measure of the state of ecosystems.
DEPI and Parks Victoria are responsible for
managing large areas of public land on the island.
This includes managing forest fuels and reducing
bushfire risk. A variety of methods are used to
reduce fuels, such as planned burning, candling,
slashing and mowing.
While vegetation growth stage structure and geometric
mean abundance could provide more natural measures
of ecosystem resilience, more research is required. DEPI
is currently working with the University of Melbourne to
develop tools so that these measures can be integrated into
a risk-based approach to bushfire management planning.
In 2013, as part of the annual bushfire
management planning process, DEPI and Parks
Victoria assessed the value and suitability of fuel
management activities for Raymond Island.
Planned burning can be used to manage a landscape so
that overall, it is moving toward a desired growth stage
structure and distribution. While the landscape can never be
managed so that it is constantly at or near an optimal age
class distribution, it can be managed so that it approaches
this goal. This helps in ensuring persistence of all species.
Many local people are interested in ensuring the
health of the koala population and the environment
while supporting fuel management to make the
island safer from bushfire.
The team decided to embark on a pilot program
of mechanical fuel reduction, using methods such
as slashing and mowing to create patches of land
with reduced fuel. One of the objectives of this
pilot program was to effectively reduce hazardous
fuels while having minimal impact on the local
koala population.
Old growth vegetation can be quickly converted to juvenile
by a single bushfire. However, it takes much longer (i.e.
decades) to convert juvenile vegetation to old growth. Thus,
strategic bushfire management is important to help minimise
the risk of landscape-scale bushfires on older age classes.
Works began early in 2013 and DEPI and Parks
Victoria worked closely with local residents and
the contractors to minimise disruption to nearby
properties and koala habitat.
The approach to managing ecological risks associated with
planned burning is balanced with the need to manage risk
to human life and property, which is the top priority under
the Code.
The pilot areas are being monitored for impacts and
local staff have continued to keep the community
informed. The community has provided positive
feedback on this pilot.
The work on Raymond Island demonstrates there
is no ‘one size fits all’ approach for fuel
management. DEPI considers fuel management
planning on a case-by-case basis to find the most
effective and balanced approach.
Delivery of DEPI Fuel Management Program 2012–13
The target of 250,000 hectares for 2012–13 represented
DEPI’s largest annual fuel reduction target. Over the year,
678 planned burns were carried out treating 255,226
hectares of public land – 58,077 hectares more than the
previous year. This was achieved despite a prolonged
bushfire season.
Fire Operations Plans
The 2012–13 fuel reduction program was based on Fire
Operations Plans (FOPs) drawn up in consultation with key
stakeholders and communities across Victoria.
Community comment was requested through local
advertising, media announcements and notifying interested
people. Other opportunities for community engagement
included community forums, industry days, smoke health
forums, meetings and facilitated discussions with individuals
and interested groups.
DEPI has also supported several local communities to
establish ongoing ‘strategic conversations’, which in part help
local community members to better understand the function
of planned burning and understand their bushfire risk.
The draft FOPs were open to community consultation and
provided opportunity for input of local knowledge, as well
as consideration of proposed timing. This helped to reduce
the impact of planned burns on local communities and
industries while still delivering the program.
Case study – Cape Conran
A 78 hectare planned burn was successfully carried out
at Cape Conran Coastal Park in Gippsland in March
2013. DEPI and Parks Victoria had earmarked the burn
in the local Fire Operations Plan three years before the
conditions became suitable to safely conduct it.
The main objective for the burn was to protect the park
from the impacts of bushfire, including visitor areas,
cabins, camping grounds and walking tracks – all
particularly popular to visitors in summer – as well as
nearby private property.
The burn also aimed to reduce the park’s over-mature
tea tree population which posed a risk to ecosystem
resilience.
The vegetation within the burn site made safe burning
a complex task. Heath, a volatile fuel, was located
near the park’s visitor centre; the site also had banksia
woodlands which can burn either very hot or very cold.
Tea trees are difficult to burn as they have no
understory. To prepare the site, machine rolling of the
tea trees ensured there was fuel to light off to help get
the fire up into the crowns of the trees. Wind conditions
had to be just right as there was the risk of spotting
from the tree tops if it was too windy.
For example, the local surf school could not access
their usual surf location, but they were assisted by staff
to access a different part of the beach.
Some local roads and tracks had to be closed for the
duration of the burn and afterwards to ensure public
safety, but many were intentionally kept open. Although
this required extra effort and investment in traffic
management control, it allowed various user groups
to continue to access key coastal points, including the
boat ramp and beaches.
A funeral service was also factored into the burn delivery.
The optimal method for lighting the burn was with an
aerial drip torch – an ignition machine slung below a
helicopter – and the helicopter passing overhead was
timed to ensure the noise did not affect the service.
The helicopter was employed not only for ignition, but
also to check that no visitors were in the area.
Crews completed the burn over two days with support
from local CFA brigades, successfully burning around
80 per cent of the planned area. As well as reducing
bushfire risk to Cape Conran, the burn will improve
future habitat for the local animals and plants. It is
hoped that the dominance of tall tea tree populations
will decrease and follow-up burns in coming years
should continue this trend.
Not only was this a complex burn to deliver in terms
of requiring the right weather conditions, but there
were a number of other challenges, such as traffic
management and minimising the impact on tourism
and recreation in the area.
Challenges experienced during 2012–13
Weather impacts
The successful delivery of the 2012–13 program was
primarily the result of two significant weather windows.
Favourable conditions in winter and early spring, with below
average rainfall in western Victoria, allowed more than
46,000 hectares to be treated with planned burning in the
first half of the financial year. This was almost twice the spring
average. Spring burning opportunities in central and eastern
Victoria were minimal due to localised flooding events.
A lack of widespread spring rain led to an early start to the
bushfire season, with significant fires occurring from midNovember in western Victoria. Dry conditions continued
throughout summer, resulting in a number of major, longrunning forest fires.
The presence of underlying dry conditions delayed the start
of autumn planned burn activities in many areas. However,
eastern Victoria received a strong rainfall break in midMarch, which enabled a significant increase in planned
burning activities. These unseasonal autumn conditions
persisted through to May, providing enough suitable
opportunities for the full program to be carried out.
Managing impacts to communities
The impacts of planned burning on communities can include
the health effects of smoke, reduced air quality, reduced
access to parks and forests, road closures and economic
impacts associated with various industries. While these
impacts are less damaging than those resulting from a
major bushfire, DEPI endeavours to minimise these impacts
as much as possible by working with communities and
industries to better understand how they are affected. At the
same time DEPI aims to take advantage of every suitable
opportunity to carry out planned burning.
Bushfires and planned burning produce smoke which can
impact individuals, communities and industries such as wine
makers, apiarists and tourism. DEPI and Parks Victoria are
continuing to work with the Victorian Departments of Health
and Human Services, Tourism Victoria, VicRoads, Victoria
Police and the Environment Protection Authority to minimise
the impacts of smoke on communities and economies.
DEPI also works with the Bureau of Meteorology to try
to broadly predict where smoke from planned burns may
travel and settle so that relevant communities and industries
can be given as much notice of potential impacts as
possible. The close partnership between bushfire behaviour
analysts from DEPI, the Bureau of Meteorology and Parks
Victoria has helped to raise the alert of potential smoke
exposure situations.
DEPI has made a range of improvements to systems and
procedures to ensure that stakeholder and community
impacts and concerns are a key consideration in fuel
management planning and operations. DEPI has made
changes to many aspects of burns based on advice from
and issues raised by stakeholders.
DEPI is committed to providing timely and informative
notifications of planned burns to the community and
stakeholders in a variety of ways. This has been a strong
focus in recent years, as DEPI acknowledges that timely
advice allows local people and groups to better plan activities.
DEPI’s communication campaign, which uses traditional
media and digital communication channels, along with
roadside signage, has also resulted in increased awareness
of planned burning.
Bushfire impacts
Case study – Community
involvement in planned burning
Dry conditions over much of the state, particularly in the
west, led to an early and prolonged bushfire season from
November to April.
Eagle Rise is a short distance east of Yarra Junction
and contains a mix of forested and cleared private
property adjoining public land. Much of the terrain
is steep and the area has long been regarded by
many as a bushfire risk to the community. This
was highlighted in 2006 when a bushfire in nearby
Millners Hill threatened homes, causing major
disruption and anxiety in the community. This has
contributed to local interest groups becoming more
active in relation to land management.
DEPI personnel attended 866 fires (a total area of 201,630
hectares) including six major bushfires that required attention
over several weeks before being controlled. DEPI worked
closely with the Fire Services Commissioner, CFA and other
emergency agencies.
In response to requests from residents and the
local CFA, a burn that comprised 90 per cent
private property was included in the 2012–13
Fire Operations Plan. An intensive effort was then
carried out with property owners and stakeholders
to develop a plan for this high-risk location. On-site
meetings were held with landholders, the CFA and
Yarra Ranges Shire Council to hear concerns and
explain the objectives of the planned burn and how
it would be delivered.
All landowners gave permission for the planned
burn to go ahead on their land, relevant approvals
were obtained and the burn was fully planned,
prepared ready for ignition.
Several DEPI and Networked Emergency Organisation staff
were deployed to Tasmania and New South Wales during
January to assist with bushfires.
Given the extended period of planned burning and bushfire
response during 2012–13, high levels of staff fatigue needed
to be carefully managed.
Three DEPI firefighters died while on active duty in Victoria
and interstate. DEPI and its staff were deeply saddened by
these deaths and are participating in internal and external
safety reviews towards improved safety for its firefighters.
Planned burns breaching contingency areas
Across the state, three out of 678 planned burns breached
contingency areas (equivalent to less than 0.5 per cent of all
planned burns in 2012–13). These burns were investigated
because they could not be contained within 30 minutes
and/or impacted private land. Of these, two burns caused
damage to private assets.
The three planned burns investigated were:
Hallston – Hallston Road (South Gippsland District)
Unfortunately the right weather conditions did not
eventuate and the planned burn did not go ahead
in 2012–13. However, this is an example of how
DEPI and stakeholders can work through a complex
situation together to develop an agreed outcome.
This planned burn has been identified as a high
priority for 2013–14.
40 hectare ecological burn ignited on 25 March 2013 which
breached contingency areas the following afternoon. It burnt
approximately 562 hectares of both public and private land
causing damage to blue gum and pine plantations, private
fencing, pasture and sheds.
Terrick Terrick National Park – O’Neill’s Paddock
(Murray Goldfields District)
139 hectare ecological burn breached contingency areas
on 19 April 2013. It burnt 194 hectares of both public and
private land including pasture and causing damage to fences.
Loch Sport – Walkers Point (Heyfield District)
367 hectare fuel reduction burn ignited on 30 April 2013.
It was reignited on 3 May 2013 and breached contingency
areas on 8 May 2013, burning 50 hectares of public land.
Statewide fuel management activities
This section rates DEPI’s achievements in:
• fuel management
• planning for fuel management
• preparation for fuel management
• monitoring.
The fuel reduction target is confirmed through the State Budget process each year. The 2012–13 fuel reduction target was
250,000 hectares. The overall area where fuel was reduced was 275,192 hectares.
The accounting framework for bushfire fuel management treatments is included in Appendix 1.
Fuel management activities
Activity
Rating
Area treated
by planned
burning
Area treated
by other fuel
management
treatments
N/A
Total
hectares
Hectares
contributing
to target
255,226
255,226
6757
N/A
Description
This includes:
• mechanical
• chemical
• grazing
Area suitable
for planned
burning
affected by
bushfires
N/A
151,552
N/A
Areas within the Asset Protection Zone, Bushfire
Moderation Zone or Landscape Moderation Zone
as defined in the Code of Practice for Bushfire
Management on Public Land (2012) which were
affected by bushfire.
Area identified
on a current,
approved Fire
Operations
Plan (FOP)
affected by
bushfires
N/A
19,966
19,966
This figure is a subset of Area suitable for planned
burning affected by bushfires. These are areas
pre-planned for planned burning that were affected
by bushfire.
413,535
275,192
Includes area treated by planned burning and area
pre-planned for planned burning (as identified on the
FOP) affected by bushfire.
Overall area
where fuel
has been
reduced
Table does not include burns breaching contingency areas/containment lines.
Other activities
Performance
indicator
Rating
Description
Activity 1: Planning and preparation for fuel management activities
Burn plans
completed for
165 per cent
of intended
planned burn
program
Burn
preparation
completed for
140 per cent
of intended
planned burn
program
To enable planned burning to be carried out, where and when conditions were suitable,
burn plans were completed for 579,200 hectares across the state (232 per cent of
intended planned burn program).
Burn plans were completed for burns across the three years of the FOP to provide
operational flexibility in scheduling burns. This enabled burns to be brought forward in
areas where weather conditions were more suitable or to reschedule burns to better
suit operational and community needs.
Regions carried out site preparation for 483,130 hectares (193 per cent of intended
planned burn program) to ensure that sufficient burns would be available if weather
conditions were suitable.
Activity 2: Community engagement
Communities
have been
engaged
during the
planned
burning
program
process
DEPI has provided a broad range of opportunities for stakeholders and communities
across Victoria to be involved in and better understand planned burning.
During 2012–13 these included:
• community forums
• industry days
• smoke and health forums
• six regional stakeholder roundtable meetings
• four statewide peak body stakeholder roundtable meetings
• facilitated discussions with many interested individuals and stakeholder groups.
Stakeholders engaged included:
• wine industry
• apiarists
• health industry
• agriculture industry
• tourism industry
• conservation groups.
An external evaluation of planned burning engagement from 2010–2012 (undertaken
in June 2013) showed that key stakeholder groups increased their understanding of
planned burning as a result of engagement with DEPI during 2012–13. The evaluation
included an activity review and interviews with internal and external stakeholders.
Engagement undertaken across the state was evaluated against three key criteria and
rated DEPI as “good” in ensuring that key stakeholders received accurate and timely
information about planned burns, and “just good enough” in the transparency and
defensibility of engagement processes. This evaluation will be undertaken every two
to three years in the future to help inform DEPI’s engagement planning.
In 2012–13 DEPI continued to work on improving relationships with key stakeholders,
particularly with conservation and biodiversity focused groups.
Throughout 2012–13 communities and stakeholders were consulted during the
development of the framework for this report, the first annual report on DEPI’s fuel
management program. This engagement occurred between October 2012 and January
2013, and a significant amount of feedback from stakeholders was considered in the
development of the report.
Performance
indicator
Rating
Description
Activity 2: Community engagement (continued)
For each of DEPI’s regions a regional engagement plan was developed based on a
statewide plan for community engagement about planned burning. Through these
plans, DEPI consistently facilitated input to the Fire Operations Planning process,
notified communities and stakeholders about planned burns and continued dialogue
with a broad range of key stakeholder groups to further develop relationships.
DEPI continued to notify communities about the location and timing of planned burns
through the media, as well as the potential impacts of planned burning activities.
Activity 3: Monitoring
Monitoring
programs
relating to
risk and
biodiversity
assessment
undertaken
The activities of the monitoring program for 2012–13:
• A monitoring and research sites database was developed to allow sites to be
viewed in map form. The database is in the testing phase and will be released
on the DEPI Biodiversity Interactive Mapper in 2013–14.
Observations of the monitoring program for 2012–13 include:
• Re-assessment of monitoring sites in large mosaic burns in the Otways and
Upper Thompson, two years after planned burning, to monitor the response
of flora, fauna, habitat structure and fuels to mosaic burning.
• Pre-fire surveys of 1575 hollow-bearing trees across 36 planned burns in
Gippsland, including repeats visits to 18 sites for audit/data quality assurance.
Post-fire surveys will be conducted after spring planned burning in 2013.
Flora assessment:
• 1381 plots were assessed for flora species with over 230 species recorded.
• Methods used included the All Species Assessment and Indicator Species
Assessment from the Flora monitoring protocols for planned burning: a user’s
guide (Cawson and Muir, 2008) and a frequency of occurrence assessment
across 1x1 metre quadrats.
Fauna assessment:
• 771 remote cameras were deployed to assess fauna with 21 native mammal
species, 10 feral mammal species, 44 bird species and four reptile species.
• 77 habitat structure assessments were conducted using the Guide to Monitoring
Habitat Structure – Standard Method.
• 83 species of bird were recorded across 158 two hectare, 20 minute standard
bird surveys.
• Seven native species and one feral species of mammal recorded through trapping.
Fuels and fire severity:
• 102 fuel hazard surveys were conducted using the Overall Fuel Hazard Assessment
Guide, 4th Edition.
• Over 3400 fire severity assessments were conducted using a fire severity ground
truthing assessment developed by the DEPI Fire Management Policy Division.
EVCs/EVDs:
• 17 Ecological Vegetation Divisions were sampled.
• 33 Ecological Vegetation Classes were sampled.
Performance
indicator
Rating
Description
Activity 4: Total output costs
Planned burning program was sufficient and implemented in an efficient manner
Funds
allocated ($m)
Total budget allocated to DEPI in the Victorian Budget 2012–13 was $353.2 million for
“Effective management of fire”. This represented an increase on the 2011–12 budget
as a result of additional investment in expanding the planned burning program.
Some of the fuel management activities covered in the budget included:
• improved community engagement through roundtables and other forums
• recruitment of additional field staff
• increased involvement and mobility of staff (stand-by and overtime, training,
medicals, moving taskforces around the state)
• additional equipment and vehicles to support increased level of staff involvement
• extending availability and flying hours for aircraft for ignition and patrol of planned
burns.
Work is currently underway to develop an improved costing system so that the actual
costs of each planned burn undertaken can be assessed. Future reports will provide
more detailed information on this.
In 2012–13, CFA assisted DEPI with approximately 96 planned burns on public land
across the state.
Gippsland region fuel management activities
overview
• Six fire districts, from east to west:
—— Orbost
—— Swifts Creek
—— Bairnsdale
—— Heyfield
—— South Gippsland
—— Baw Baw
• Topography includes riverine plains, foothills and mountains, which results in a widely varied climate. Annual average
rainfall varies from 600mm to 1950mm throughout the region.
• Alpine areas receive snow throughout winter, however climatic conditions across the region are best described
as ‘Mediterranean’, generally with a wet winter and a hot, dry summer.
• Contains approximately 70 Ecological Vegetation Classes ranging from wet heathland to shrubby dry forest and
sub-alpine woodland.
• Home to a diverse array of fauna, including some of the state’s threatened species.
Activity
Rating
Area treated
by planned
burning
Total
hectares
Hectares
contributing
to target
114,942
114,942
Description
The Gippsland Region allocated planned burning
program for 2012–13 was 97,760 hectares.
The Gippsland Region treated 114,942 hectares (244
burns) which equates to 118 per cent of its planned
program.
Gippsland exceeded the allocated number hectares to
be treated. The spring burning season provided limited
opportunities with the majority of the burning program
completed in autumn.
In previous years the autumn program has been
completed during the month of April, however
unseasonal dry weather in 2013 provided opportunities
well into the month of May.
Area treated
by other fuel
management
treatments
N/A
645
N/A
This includes:
• mechanical
• chemical
• grazing.
Area suitable
for planned
burning
affected by
bushfires
N/A
76,235
N/A
Management on Public Land which were affected
by bushfires.
Area identified
on current,
approved Fire
Operations
Plan (FOP)
affected by
bushfires
N/A
3447
3447
by bushfire.
191,822
118,389
Overall area
where fuel
has been
reduced
Other activities
Performance
indicator
Rating
Description
Activity 1: Planning and preparing for fuel management activities
Total area
planned and
prepared
for planned
burning
• Gippsland’s allocated planned burning program for 2012–13 was 97,760 hectares.
• Burn plans were prepared for 224,101 hectares (229 per cent of program area) and
site preparation completed for 189,417 hectares (194 per cent of the program area).
• Performance indicators were set early in the season which allowed districts to start
both burn plans and site preparation early. Gippsland staff had an extremely busy
summer with extensive bushfire response, however early planning allowed a large
number of sites to be prepped by external contractors. Having burn plans and area
prepped in excess of the hectare target allowed for a greater choice of burns to be
ignited when the weather was right.
Monitoring
programs
relating to
risk and
biodiversity
assessment
undertaken
• 816 plots were assessed for flora species with 186 species of flora recorded
• Gippsland focal flora – to determine if Key Fire Response Species respond to
inter-fire interval in the manner predicted by their vital attributes (Gippsland).
• 60 habitat structure assessments were conducted using the Guide to Monitoring
Habitat Structure – Standard Method.
species, six feral mammal species, 24 bird species and two reptile species
recorded.
• 72 species of bird were recorded across 20 minute two hectare standard bird
surveys.
• Pre-fire surveys of 1575 hollow-bearing trees were completed across 36 planned
burns in Gippsland, including repeat visits to 18 sites for audit/data quality
assurance.
Guide, 4th Edition.
• 1093 fire severity assessments were conducted using a fire severity ground truthing
assessment developed by Fire Management Policy Division.
• 10 Ecological Vegetation Divisions sampled.
• 20 Ecological Vegetation Classes sampled.
North East region fuel management activities
overview
• Four fire districts, from east to west:
—— Upper Murray
—— Ovens
—— Goulburn
—— Murrindindi
• Consists of river red gum forested corridors along the Murray, Goulburn and Ovens rivers, cleared farming lands of the
northern plains, dry forested foothills and mountainous terrain.
• Climate varies across the region with annual rainfall ranging from 425mm on the plains to more than 1200mm on the Alps.
• Home to myriad flora and fauna, including River Red gums and Murray Cod and a number of threatened species
including Leadbeater’s and Mountain Pygmy Possums, Spotted Tree Frogs and Regent Honeyeaters.
Activity
Rating
Area treated
by planned
burning
Total
hectares
Hectares
contributing
to target
72,767
72,767
Description
The North East Region allocated planned burning
program for 2012–13 was 67,708 hectares.
The North East Region treated 72,767 hectares (165
burns) which equates to 107 per cent of its program.
North East was also able to support the planning,
preparation and delivery of burns across the state
in the lead up to conditions becoming suitable for
burns locally.
The additional planning and preparation across
the region provided flexibility in the program which
enabled it to direct resources to assist districts with
priority burns and move resources in response to
weather and stakeholder variables. The North East
program was exceeded with minimal stakeholder/
community issues as a result of good planning and
stakeholder engagement.
Area treated
by other fuel
management
treatments
N/A
766
N/A
This includes:
• mechanical
• chemical
• grazing.
Area suitable
for planned
burning
affected by
bushfires
N/A
26,191
N/A
by bushfire.
Area identified
on current,
approved Fire
Operations
Plan (FOP)
affected by
bushfires
N/A
843
843
by bushfire.
99,724
73,610
Total area
where fuel
has been
reduced
Other activities
Performance
indicator
Rating
Description
Total area
planned and
prepared
for planned
burning
• North East’s allocated planned burning program for 2012–13 was 67,708 hectares.
• The dry spring leading into a hot dry summer in north-eastern Victoria limited
opportunities to conduct planned burns at the start of the financial year.
• The autumn program was not able to get underway until April, following a long dry
summer and extended bushfire season in the region.
• Small amounts of periodic rainfall did provide a number of good burning windows
leading into May, enabling the North East to carry out an extensive program.
Monitoring
programs
relating to
risk and
biodiversity
assessment
undertaken
• 22 sites were assessed for two to 12 week post-burn habitat structure, fuel hazard
and fire severity near Corryong.
• 22 sites were assessed for fauna using remote cameras near Corryong.
• 13 native mammal species, 11 bird species, three reptile species and five species
of feral animal were identified by remote camera surveys.
• Five Ecological Vegetation Divisions sampled.
• Six Ecological Vegetation Classes sampled.
Loddon Mallee region fuel management activities
overview
• Two districts, from east to west:
—— Murray Goldfields
—— Mallee
• Consists of River Red Gum forest corridors of the Murray River, cleared dry farmland, and large tracts of Mallee and Heath
on sandy soils. Southern part also features isolated patches of Box Iron Bark Forest and mixed species foothill forests.
• Climate varies significantly across the region but is generally characterised by hot summers and mild winters in the west,
and hot summers with wet and cold winters in the east. Annual average rainfall ranges from 250mm to 700mm across
the region.
• Diverse range of public land including grasslands at Terrick Terrick listed under the Environment Protection and
Biodiversity Conservation Act 1999 and internationally-significant wetlands at Hattah and Kerang.
• Home to 175 threatened fauna species and 533 threatened flora species, including numerous rare and threatened
orchids which DEPI is helping conserve.
Activity
Rating
Area treated
by planned
burning
Total
hectares
Hectares
contributing
to target
43,198
43,198
Description
• The North West Region allocated planned
burning program for 2012–13 was 44,795
hectares.
• The North West Region treated 43,198 hectares
(84 burns), or 96 per cent of its program.
• North West carried out a significant burn program
completing 97 burns over a season that provided
restricted burning opportunities in autumn.
The region also supported the delivery of burn
programs in other regions over the autumn
period that contributed to DEPI meeting the state
wide target.
Area treated
by other fuel
management
treatments
N/A
1306
N/A
This includes:
• mechanical
• chemical
• grazing
Area suitable
for planned
burning
affected by
bushfires
N/A
27
N/A
by bushfire.
Area identified
on current,
approved Fire
Operations
Plan (FOP)
affected by
bushfires
N/A
0
0
by bushfire.
44,531
43,198
Overall area
where fuel
has been
reduced
Other activities
Performance
indicator
Rating
Description
Total area
planned and
prepared
for planned
burning
• North West’s allocated planned burning program for 2012–13 was 44,795 hectares.
• Burn plans were prepared for 83,139 hectares (186 per cent of the program area)
and site preparation completed for 72,223 hectares (161 per cent of the program
area).
• Seasonal conditions experienced in 2012–13 were generally favourable for planned
burning during spring. Opportunities were limited later in the season due to a very
dry summer leading into a dry autumn.
• Extensive burn planning (186 per cent of program) and preparation (161 per cent
of program) ensured a full range of burns were ready for ignition subject to suitable
conditions.
Monitoring
programs
relating to
risk and
biodiversity
assessment
undertaken
• 29 post burn assessments of flora species presence, cover abundance and lifestage were conducted using the All Species Assessment from the Flora monitoring
protocols for planned burning: a user’s guide (Cawson and Muir, 2008).
• Two post burn assessments of key fire response species density, cover and lifestage were conducted using the Indicator Species Assessment from the Flora
monitoring protocols for planned burning: a user’s guide (Cawson and Muir, 2008).
• Four Ecological Vegetation Divisions sampled.
• Seven Ecological Vegetation Classes sampled.
• Mallee hollows were assessed to determine the size at which hollows become
useful for fauna and the time-since-fire to reach these hollow sizes. Fifty-eight sites
were surveyed for hollow dependent fauna in 2012–13.
• Mallee herbivory were assessed to determine how introducing herbivores
(kangaroos, goats, rabbits) post fire influences flora composition, vegetation
structure and fire fuel characteristics. The third round of post-fire surveys of
herbivore grazing impacts on vegetation recovery were conducted in the Mallee in
March 2013.
• Mallee planned burn scenario mapping was carried out to develop 20 year
projections of the effects of planned burning on biodiversity in the Murray Sunset
Landscape Management Unit.
• A concerted effort was made to work closely with the community and environmental
groups that provided information regarding particular species. Changes were made
to several planned burns as a result of information received, including the exclusion
of approximately eight hectares of native vegetation from a burn near Bendigo
to help protect the habitat of the Eltham Copper Butterfly. DEPI also worked
closely with the community to modify burns near Castlemaine to protect known
Eltham Copper Butterfly habitat. Specific areas of habitat were excluded and DEPI
rescheduled burns from spring to autumn to take into account the life-cycle of this
rare butterfly.
Port Phillip region fuel management activities
overview
• Two districts:
—— Yarra District
—— East Metropolitan
• Landscape and climate varies greatly across the region ranging from coastal plains in the south east, to the sub-alpine
peaks of the Yarra Ranges and the drier volcanic plains to Melbourne’s west.
• Diversity of flora and fauna, with habitats including internationally significant Ramsar wetlands, the highly valued forests
of the Dandenongs, grasslands in Melbourne’s west and wet forests of the Yarra Ranges.
• These habitats support an array of species including Victoria’s faunal emblems, the Leadbeater’s Possum and the
Helmeted Honey Eater.
Activity
Rating
Area treated
by planned
burning
Total
hectares
Hectares
contributing
to target
4072
4072
Description
• The Port Phillip Region’s allocated planned
burning program for 2012–13 was 5606
hectares.
• Port Phillip treated 4072 hectares (97 burns),
or 73 per cent of its planned program.
• Port Phillip carried out a significant burn program
completing 97 burns over a season that provided
restricted burning opportunities. The region also
supported the delivery of burn programs in other
regions over autumn.
Area treated
by other fuel
management
treatments
N/A
391
N/A
This includes:
• mechanical
• chemical
• grazing.
Area suitable
for planned
burning
affected by
bushfires
N/A
16
N/A
Management on Public Land which were affected by
bushfire.
Area identified
on current,
approved Fire
Operations
Plan (FOP)
affected by
bushfires
N/A
12
12
by bushfire.
4479
4084
Overall area
where fuel
has been
reduced
Other Activities
Performance
indicator
Rating
Description
Total area
planned and
prepared
for planned
burning
• Port Phillip’s allocated planned burning program for 2012–13 was 5606 hectares.
• Burn plans were prepared for 9244 hectares (165 per cent of program area) and
• Seasonal conditions in 2012–13 were not generally favourable for planned burning.
Major burn planning (165 per cent of program) and preparation (213 per cent of
program) ensured a full range of burns were ready for ignition subject to suitable
conditions.
Monitoring
programs
relating to
risk and
biodiversity
assessment
undertaken
• 10 post burn assessments of flora species presence, cover abundance and lifestage were conducted using the All Species Assessment from the Flora monitoring
protocols for planned burning: a user’s guide (Cawson and Muir, 2008).
• Four post burn assessments of key fire response species density, cover and lifestage were conducted using the Indicator Species Assessment from the Flora
monitoring protocols for planned burning: a user’s guide (Cawson and Muir, 2008).
• Three Ecological Vegetation Divisions sampled.
• Three Ecological Vegetation Classes sampled.
South West region fuel management activities
overview
• The former South West Region (South West) comprised four districts:
—— Midlands
—— Wimmera
—— Otway
—— Far South West
• Vegetation communities are diverse, ranging from heathy woodlands along the coast and in the Wimmera deserts, to the
Buloke woodlands on the fertile Wimmera plains, the temperate rainforest communities of the Otway mountain ranges
and the grasslands of the volcanic plains.
• Threatened species include the south east subspecies of the red-tailed black cockatoo, mammals including bandicoots
and phascogales and reptiles including earless dragons, swamp skinks and a range of snakes.
With the merge of the Department of Sustainability and Environment (DSE) and the Department of Primary Industries to create DEPI, changes were made
to the regional structure. As a result, the South West Region was divided into two regions, Barwon South West Region and Grampians Region. The former
DSE South West Region is referred to here for the purposes of reporting on activities in 2012–13.
Activity
Rating
Area treated
by planned
burning
Total
hectares
Hectares
contributing
to target
20,247
20,247
Description
• The South West Region’s allocated planned
burning program for 2012–13 was 34,268
hectares.
• South West treated 20,247 hectares (88 burns),
or 59 per cent of its planned program.
• South West’s planned burning program was
hampered by underlying dryness across
most of the region, periodical rain through the
Otway Ranges, and resources being deployed
throughout Victoria to capitalise on more
favourable burning conditions elsewhere.
• The region was able to treat 20,247 hectares
through innovative programing of significant
burns during winter and early spring in the
Wimmera and Far South West Districts, taking
every opportunity to undertake burning when
conditions allowed.
Area treated
by other fuel
management
treatments
N/A
3649
N/A
This includes:
• mechanical
• chemical
• grazing.
Area suitable
for planned
burning
affected by
bushfires
N/A
49,083
N/A
by bushfire.
Area identified
on current,
approved Fire
Operations
Plan (FOP)
affected by
bushfires
N/A
15,664
15,664
by bushfire.
72,979
35,911
Overall area
where fuel
has been
reduced
Other activities
Performance
indicator
Rating
Description
Total area
planned and
prepared
for planned
burning
• South West’s allocated planned burning program for 2012–13 was 34,268 hectares.
site preparation completed for 63,312 hectares (185 per cent of program area).
• Significant effort was invested throughout the year in burn planning to allow more
flexibility during autumn if suitable conditions presented. The treated area was
limited due to marginal conditions locally and resource support provided to eastern
Victoria.
Monitoring
programs
relating to
risk and
biodiversity
assessment
undertaken
• 519 plots were assessed for flora species with 116 species of flora recorded.
• 17 habitat structure assessments were conducted using the Guide to monitoring
habitat structure – Standard Method.
species, seven feral mammal species, 33 bird species and one reptile species
recorded.
• 55 species of bird were recorded across 20 minute two hectare standard bird
surveys.
• Seven native species and one feral species of mammal were recorded through cage
and Elliot trapping.
Guide, 4th Edition.
• 228 fire severity assessments were conducted using a fire severity ground truthing
assessment developed by Fire Management Policy Division.
• 10 Ecological Vegetation Divisions sampled.
• 14 Ecological Vegetation Classes sampled.
References
Department of Sustainability and Environment (2012) Code of Practice for Bushfire Management on Public Land,
Department of Sustainability and Environment, East Melbourne, Victoria, Australia.
Department of Environment and Primary Industries (2013) Victorian Bushfire Risk Profile Report. Department of Environment
and Primary Industries, East Melbourne, Victoria, Australia.
Cawson J. G. and Muir A. (2008) Flora monitoring protocols for planned burning: a user’s guide. Fire and Adaptive
Management Report No. 74. Department of Sustainability and Environment, East Melbourne, Victoria, Australia.
Hines F., Tolhurst K., Wilson A. A. G. and McCarthy G. J. (2010) Overall fuel hazard assessment guide, 4th Edition. Fire and
Adaptive Management Report No. 82. Department of Sustainability and Environment.
Keeney, R., & Gregory, R. (2005) ‘Selecting attributes to measure the achievement of objectives.’ Operations Research, 53,
1–11.
Parliament of Victoria (2010) 2009 Victorian Bushfires Royal Commission - Final Report. Parliament of Victoria.
Treloar S. M. (2011) Guide to Monitoring Habitat Structure. Fire and Adaptive Management Report No. 85. Department of
Sustainability and Environment, East Melbourne, Victoria, Australia.
Appendix 1: Accounting framework for bushfire fuel
treatments
Introduction
A bushfire fuel treatment objective must specify:
Under the Forests Act 1958, the Secretary to the
Department of Environment and Primary Industries (the
Secretary) is responsible for carrying out proper and
sufficient work in State forests, national parks and on
protected public land to prevent and suppress bushfires.
Bushfire fuel treatment contributes to meeting this outcome.
• Fuel treatment coverage – the portion of the planned
area over which the intended fuel outcome is to be
achieved, generally expressed as a percentage. The
fuel outcomes will be expressed in terms of overall fuel
hazard1 or other measures such as height.
In a forest or grassland, bushfire fuel is any material that can
burn (be ignited and sustain a fire) under certain conditions,
including grass, leaf litter, bark, woody debris and live
vegetation. Bushfire fuel treatments can be undertaken to
modify the load, continuity and arrangement of fuels and
reduce the risk of bushfire.
Planned burning is generally the most effective treatment for
managing bushfire fuel over large areas. Other treatments
(that can be applied at different scales) include slashing,
mowing, fuel break construction.
This accounting framework does not apply to outcomes
that are not related to bushfire fuel treatment. Land
management and/or ecological outcomes are prescribed
at the landscape or program level. DEPI will report on the
achievement of ecological outcomes as a component of
public accountability.
Policy
Accounting unit
The basic accounting unit for the amount of bushfire fuel
management activities in Victoria is the ‘treated area’.
The treated area is the area (in hectares) of land identified
on a Fire Operations Plan on which a bushfire fuel treatment
has been successfully undertaken to achieve a pre-defined
bushfire fuel treatment objective.
Planned area
The ‘planned area’ is a unit of land identified on a Fire
Operations Plan.
• Treatment timeframe/persistence – the timeframe
over which the treatment is to be undertaken or persist
to achieve the treatment coverage
Treated area
If, for a planned area, the fuel treatment coverage and
treatment timeframe are both met, the planned area is
determined to be a ‘treated area’.
Bushfire fuel management treatments
The type of treatment to be applied should be determined
as part of the planning process, and must consider
legislative requirements (including any restrictions on the use
of a particular treatment type), land management objectives,
the bushfire fuel treatment objective and the height, cover
and type of bushfire fuel present at the site
The following bushfire fuel treatments are approved for
accounting purposes. Each treatment type must be
accounted for separately.
• Treatment by fire including:
—— Planned burning
—— Bushfires where they occur in areas pre-planned for
fuel treatments.
• Mechanical treatment (for example, mowing, slashing
and mulching) where identified on an approved Fire
Operations Plan.
• Chemical treatment, for example by using herbicide
where identified on an approved Fire Operations Plan.
• the type and amount of bushfire fuel treatment required
to assist in the prevention and suppression of bushfire
• Grazing by domestic stock where targeted, strategic
grazing by domestic stock (typically cattle or sheep)
can impact on bushfire fuel by physically removing and
compacting vegetation (commonly grasses). Grazing
by domestic stock may only be accounted for as a
bushfire fuel treatment where it is specifically undertaken
to manage bushfire fuel and has been identified in an
approved Fire Operations Plan.
• the height, cover and type of bushfire fuel present
at the site
• Other treatments approved by the Secretary to the
Department of Environment and Primary Industries.
Bushfire fuel treatment objective
A bushfire fuel treatment objective must be established for
the ‘planned area’. The objective should be set considering
(but not limited to):
• legislative requirements, the Code of Practice for Bushfire
Management on Public Land 2012 and other relevant
policies, and the overall land management objectives.
The bushfire fuel treatment objective should be simple,
measurable, achievable and realistic. It must be approved
prior to undertaking the bushfire fuel treatment for the
planned area.
1 Overall Fuel Hazard Assessment Guide, 4th edition July 2010, Fire
and adaptive management report no. 82, Fire Management Branch,
Department of Sustainability and Environment, Melbourne.
Customer Service Centre 136 186
www.depi.vic.gov.au

Fuel management report – pages 12-40 [PDF File

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